Switch libSQL JavaScript SDK to use napi-rs

[penberg]

This pull request ports the libSQL JavaScript package to use napi-rs to replace Neon bindings. The main motivation is that -- despite multiple attempts -- I have not been able to upgrade Neon bindings (the toolchain changed significantly). But perhaps more importantly, most projects seem to have converged around napi-rs and it has more complete support for NAPI anyway.

Fixes #184

[kaaax0815]

what is the priority of this? should i rebase #169 on this when stable?

[penberg]

Hey @kaaax0815, this is still a bit early so let's just treat and merge #169 independently.

[Copilot]

Pull Request Overview

This PR ports the libSQL JavaScript SDK from Neon to napi-rs bindings, updates the build toolchain, and revises CI workflows accordingly.

• Replace Neon bindings with napi/napi-derive and add a build.rs for setup
• Update Cargo.toml: bump version, swap dependencies, adjust release profile
• Revamp GitHub Actions: drop neon-based workflows and introduce a unified CI.yml

Reviewed Changes

Copilot reviewed 51 out of 52 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
npm//*.json & npm//README.md	Add platform-specific npm packages and minimal READMEs
integration-tests/tests/async.test.js	Update async iterator usage (await it.next(), for await)
Cargo.toml & build.rs	Bump version, swap Neon for napi, add build-dependency
.github/workflows/CI.yml	Replace old CI/publish workflows with napi-rs pipeline
.cargo/config.toml	Adjust musl linkers

Files not reviewed (1)

• integration-tests/package-lock.json: Language not supported

Comments suppressed due to low confidence (3)

.github/workflows/CI.yml:45

• The runs-on: ubuntu-24.04 runner label is not a valid GitHub Actions runner (supported labels include ubuntu-latest, ubuntu-22.04, etc.). Please update this to a valid runner name.

          - host: ubuntu-24.04

integration-tests/tests/async.test.js:124

• [nitpick] Prefer let over var for block-scoped variables. Consider changing var idx = 0; to let idx = 0; for clearer, modern JS semantics.

var idx = 0;

npm/linux-arm64-musl/README.md:3

• [nitpick] Consider adding installation or usage instructions (or a link back to the main README) so consumers know how to install or import this platform-specific package.

This is the **aarch64-unknown-linux-musl** binary for `libsql`